EN 60079-0 General requirements Gas EN 60079-1 d Flameproof enclosure EN 60079-2 p Pressurized enclosure EN 60079-5 q Powder filling EN 60079-6 o Oil immersion EN 60079-7 e Increased safety EN 60079-11 ia, ib, ic Intrinsic safety EN 60079-15 n Non-sparking EN 60079-18 ma, mb, mc Die-cast enclosure EN 60079-25 i-Intrinsically safe system Electr. systems Dust EN 60079-18 maD, mbD Die-cast enclosure EN 60079-31 ta, tb, tc Protection by enclosure EN 61241-4 pD Pressurized enclosure EN 60079-11 ia, ib, ic Intrinsic safety Protection level a Two countable errors simultaneously b One countable error c Operation without faults (no errors) 1 Very high level of safety Two independent errors Two redundant protection measures 1G Gases, mist, vapors Zone 0 1D Dust Zone 20 2 High level of safety 2G Gases, mist, vapors Zone 1 2D Dust Zone 21 3 Normal level of safety 3G Gases, mist, vapors Zone 2 3D Dust Zone 22 Device category_장치 카테고리 I Mining II Area susceptible to gas explosion III Area susceptible to dust explosion Ignition protection types with the corresponding standards_해당표준에 대한 점화보호유형 [... is outside the potentially explosive area. The signal lines lead into the Ex area (e.g. supply isolators for transmitters)] Related electrical apparatus_관련전기장치 II (1G) [Ex ia] II (1D) [Ex ia] Gases, mist, vapors Dust Potentially explo- sive atmosphere is present Gases Dust Zone 0 Zone 20 Continuously, long- term, or frequently Ga Da Zone 1 Zone 21 Occasionally Gb + Ga Da + Db Zone 2 Zone 22 Rarely and briefly Ga, Gb + Gc Da, Db + Dc Equipment Protection Level (EPL) ATEX and IECEx identification marking Potentially explosive areas and zone classification according to EU directive 2014/34/EU Zone classification 유럽방폭 및 국제방폭 식별표시 2014/34/EU 지침에 따른 잠재적 폭발지역 및 구역 분류 *Typical ignitable gas Temperature classes_온도등급 Temperature classes and explosion protection groups (excerpt) Tempera- ture class Max. surface temperature of the apparatus Ignition temperature for combustible substances T1 T2 T3 T4 T5 T6 IIC T6 Ga IIIC T 150 Da Explosion groups_ 폭발그룹 T1 T2 T3 T4 T5 T6 I Methane – – – – – IIA Acetone Ethane Acetic acid Ammonia Phenol Propane* Ethyl alcohol n-Butane n-Butyl alcohol Benzine Heating oil Diesel fuel Acetal dehyde – – IIB City gas Ethyl alcohol Ethylene* Hydrogen sulfide Ethyl ether – – IIC Hydrogen* Acetylene Carbon disulfide Ex Devices ATEX Sensors Automation JUMO Safety Performance JUMO Engineering I Electrical apparatus for mines susceptible to firedamp (e.g. mining with coal dust, methane gas) II Electrical apparatus for all areas susceptible to gas explosions except for mines susceptible to firedamp (e.g. chemical industry with dyes, acetylene) III Subdivision into IIA, IIB, IIC depending on ignitability. Electrical apparatus for all areas susceptible to dust explosions IIIA = Combustible lint IIIB = Non-conductive dust IIIC = Conductive dust